Title: Know Your Enemies, II Challenge: Foe Glass Word Count: 100
He kept the Foe Glass in his office, and a second one in his bedroom. It smacked of paranoia, but for all his flaws, Mad Eye had the right of it. The Dark Lord’s reach went deeper than most people imagined, and the more tools Severus had to warn him against a traitor, the better.
At the same time, advertising his new caution would be a terrible idea. That was why he asked Minerva, mistress of illusion and transfiguration, to disguise the Foe Glass in his office as a simple mirror, its true function hidden from all but Severus himself.